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javascript - Apply different colors to Dynamically generated row of HTML table - Stack Overflow

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I've created dynamic table using HTML and javascript but rather than applying alternate color, I want to apply distinct color to each row. How can I do so?

<!DOCTYPE HTML>
<html>
    <head>
        <title>Dynamic Page</title>
    </head>


    <body>
        <table>
            <tr>
                <td>Enter Rows</td>
                <td><input type="number" id="txtRows"/></td>
            </tr>
            <tr>
                <td>Enter Columns</td>
                <td><input type="number" id="txtCols"/></td>
            </tr>
            <tr>
                <td colspan="2"><input type="button" id="btnDisplay" value="Display" onClick="createTable();"/></td>
            </tr>
        </table>
        <table id="tbl_DynamicTable" border="1">
        </table>
    </body>

    <script type="text/javascript">
        function createTable()
        {
          debugger;
            var rows = document.getElementById("txtRows").value;
            var cols = document.getElementById("txtCols").value;
            var table = document.getElementById("tbl_DynamicTable");
            var str="";
            for(var i=0;i<rows;i++)
            {
                str += "<tr id=row" + i +">";

                //r = document.getElementById('tbl_DynamicTable').getElementsByTagName('<tr>');
                //r.bgColor = colours[(i%k)/group | 0];

                //mycurrent_row.style.backgroundColor = "#EEF4EA";
                //mycurrent_row.style.backgroundColor =colours[(i%k)/group | 0];

                for(var j=0;j<cols;j++)
                {
                    if(i==0)
                    {
                        str += "<th> Header " + j + "</th>";
                    }
                    else
                    {
                        str += "<td> Row " + i + ", Cell "+ j + "</td>";
                    }
                }
                str += "</tr>";             
            }           
            table.innerHTML = str;
        }       


        $("tr").style("bgcolor","red");     
    </script>
</html>

I don't know how to use jQuery with HTML page. I'm new to this. So if possible please let me know what is needed to include in this too.

I've created dynamic table using HTML and javascript but rather than applying alternate color, I want to apply distinct color to each row. How can I do so?

<!DOCTYPE HTML>
<html>
    <head>
        <title>Dynamic Page</title>
    </head>


    <body>
        <table>
            <tr>
                <td>Enter Rows</td>
                <td><input type="number" id="txtRows"/></td>
            </tr>
            <tr>
                <td>Enter Columns</td>
                <td><input type="number" id="txtCols"/></td>
            </tr>
            <tr>
                <td colspan="2"><input type="button" id="btnDisplay" value="Display" onClick="createTable();"/></td>
            </tr>
        </table>
        <table id="tbl_DynamicTable" border="1">
        </table>
    </body>

    <script type="text/javascript">
        function createTable()
        {
          debugger;
            var rows = document.getElementById("txtRows").value;
            var cols = document.getElementById("txtCols").value;
            var table = document.getElementById("tbl_DynamicTable");
            var str="";
            for(var i=0;i<rows;i++)
            {
                str += "<tr id=row" + i +">";

                //r = document.getElementById('tbl_DynamicTable').getElementsByTagName('<tr>');
                //r.bgColor = colours[(i%k)/group | 0];

                //mycurrent_row.style.backgroundColor = "#EEF4EA";
                //mycurrent_row.style.backgroundColor =colours[(i%k)/group | 0];

                for(var j=0;j<cols;j++)
                {
                    if(i==0)
                    {
                        str += "<th> Header " + j + "</th>";
                    }
                    else
                    {
                        str += "<td> Row " + i + ", Cell "+ j + "</td>";
                    }
                }
                str += "</tr>";             
            }           
            table.innerHTML = str;
        }       


        $("tr").style("bgcolor","red");     
    </script>
</html>

I don't know how to use jQuery with HTML page. I'm new to this. So if possible please let me know what is needed to include in this too.

Share Improve this question edited Oct 21, 2013 at 9:35 asked Oct 21, 2013 at 7:36 user2898127user2898127 4
  • Show us some code first – Alexxus Commented Oct 21, 2013 at 7:38
  • you have the same question here too.. didn't this help stackoverflow./questions/19488195/… asked by yourself – bipen Commented Oct 21, 2013 at 7:38
  • How about this solution – Anupam Commented Oct 21, 2013 at 7:41
  • no it won't because I need some more details as I'm the begginer of jQuery and Javascript. – user2898127 Commented Oct 21, 2013 at 9:44
Add a ment  | 

2 Answers 2

Reset to default 4

You have many way to create a random color.

Use these example :

JAVASCRIPT

'#'+Math.floor(Math.random()*16777215).toString(16);

jQuery

(function(m,s,c){return (c ? arguments.callee(m,s,c-1) : '#') +
  s[m.floor(m.random() * s.length)]})(Math,'0123456789ABCDEF',5)

And add this hexa random color on your TR when you generate it

HTML

<table border="1">
  <tr bgcolor="#FF0000">
                  ^ Here
    <th>Month</th>
    <th>Savings</th>
  </tr>
  <tr>
    <td>January</td>
    <td>$100</td>
  </tr>
</table> 

Other example on http://www.paulirish./2009/random-hex-color-code-snippets/

javascript approach (i suggest including jQuery):

<script type="text/javascript" src="http://code.jquery./jquery-latest.min.js"></script>
<script type="text/javascript">
function get_random_color() {
    var letters = '0123456789ABCDEF'.split('');
    var color = '#';
    for (var i = 0; i < 6; i++ ) {
        color += letters[Math.round(Math.random() * 15)];
    }
    return color;
}

// paint rows on document ready
$(function(){
    paint_rows();
});

function paint_rows() {
    $('#table_id tr').each(function(){
            $(this).css('color', get_random_color());
    });
}
</script>

just make sure to add enough color values into the array colors (can use hex values as well).

and, you can call the function paint_rows() whenever needed of course.

hope that helps.

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